[Xget7]

Summary

The iOS dev HUD "Pipe" row built SHn from the requested settings only, so kitchen_500k.spz (SH degree 0) showed SH1.
The renderer holds the world's degree already (GpuWorldInfo.shDegree); the stats path now carries it up to Swift and Kotlin.

SplatEngine::sample()
  Sample.shDegree = renderer.world().shDegree            (new)
StatsPublisher::publish
  Stats.loadedShDegree                                   (new)
    iOS:     fromCppStats -> SKSplatStats -> SplatStats.loadedShDegree
    Android: statsToFloats[11] -> decodeSplatStats -> SplatStats.loadedShDegree

 var pipelineText: String {
-    let sh = min(view.shDegree, view.maxShDegree)
+    let sh = min(view.shDegree, view.maxShDegree, stats.loadedShDegree)

The Android dev HUD (SplatHudView) has no SH row, so it has no equivalent bug and stays as is.
Only its public SplatStats gains the field, to keep the platforms in step.

Evidence

• Before: HUD "Pipe" row read SH1 for a degree-0 world on an iPhone 17 Pro.
  After: the row takes the world's degree into the minimum, so it reads SH0 for that world.
  No device ran this change.
• Tests that pin the new field:

StatsPublisher.PublishRefreshesCountsWithoutClosingTheWindow   publish(shDegree 2) -> stats().loadedShDegree == 2
FrameOrder.LoadedWorldShDegreeReachesPublishedStatsAndIsZeroWithoutAWorld
                                                               no world -> 0, renderer holds 2 -> 2
SKTypeConversionsTest.StatsKeepEveryField                      loadedShDegree 2 survives fromCppStats
SplatStatsTest.decodesTimingsFlagsAndCompletedCounts           payload[11] = 2 -> loadedShDegree 2

• Where it ran: macOS host only (iOS Mac CMake tests, NDK lint, Android Gradle build and JVM unit tests).
  No iPhone, Android device or emulator.
• Checks: iOS Mac tests 386 of 386 passed (5 fixture tests skipped for missing files).
  scripts/lint-cpp.sh clean.
  :splatkit:assembleRelease :app:assembleRelease :splatkit:testDebugUnitTest passed.
  The ios-dev Swift files parse (swiftc -parse) but the app was not built or run.
  npm run check and npm run lint skipped: the React Native package does not mirror SplatStats and is unchanged.

Merge Danger

Door: Two-way.

SplatStats gains one field on each platform and the JNI stats array grows from 11 to 12 floats, with Kotlin and C++ changed together.

Blast Radius: Stats

SKSplatStats is a positional C struct and the new field is last, so existing readers are unaffected.
The iOS XCFramework mirror and Android AAR republish only on a version bump, which this change does not make.